I follow the destructions, created a form and added a number of custom fields to be filled in on the form. However, once the form's filled in, whilst a ticket is created, it doesn't contain any of the data from the custom fields on the form.
Permission-wise I've given create issue and browse permissions to the intake system user.
I was under the impression that there is no need to create actual fields in Jira for the data to be recorded into the ticket, using this product.